Not Possible to handle dead letter queue(undelivered events) in servicenow via Amazon SNS Spoke SummaryAmazon SNS advice to use Amazon SQS(DLQs) for dead letter queues (undelivered events ). Since all API endpoints related to processing DLQs are related to SQS it is not in scope for Amazon SNS Spoke.We are seeing the below documents from Amazon end for SQS API https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/Welcome.html https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-making-api-requests.html Customer may use rest messages to call SQS API but As you know already, AWS has different Auths for different services we do not have any certain docs to implement this.